What should I check if my horse's tack has mould on the leather?
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Overview
If your horse's tack has mould on the leather, the first things to check are how widespread it is, whether the leather is still sound, and whether the tack has been stored somewhere damp or poorly ventilated. In many cases, the issue is linked to moisture and storage rather than a deeper problem, but it’s worth checking the tack carefully before you use it again.
Things To Check
1. Look at how much mould is present and whether it’s just on the surface or spread across straps, billets, flaps or seams.
2. Check for any cracking, stiffness, flaking, mouldy smell, tackiness or colour changes in the leather.
3. Inspect stitching, buckles, billets, holes and keepers for weakness, rust or damage.
4. See whether the tack has been stored in a damp tack room, closed bag, cold vehicle or another poorly aired space.
5. Check whether sweat, mud, saddle soap residue or old conditioner has been left on the leather, as this can encourage mould growth.
6. Look for mould on nearby items too, such as saddle pads, girths, bridle bags or storage shelves.
7. Check whether the tack still fits and sits properly, especially if the leather has stiffened, warped or become uneven.
Common Causes
The most common cause is damp storage with poor airflow. Leather can also grow mould if it’s put away before it’s fully dry, or if sweat and dirt are left on it after use.
Sometimes the problem is linked to old cleaning residue or conditioner that has built up on the surface. Less commonly, repeated temperature changes, condensation or long-term neglect may contribute to heavier mould growth and leather damage.
What To Do
Take the tack out of use until you’ve checked it properly. If the mould is light, wipe away loose surface growth carefully and clean the leather according to the maker’s guidance. Let it dry fully in a warm, well-ventilated place, but keep it away from direct heat.
Once it’s dry, reassess the leather before conditioning. If the tack feels brittle, sticky, badly cracked or weak, it may need professional attention rather than more cleaning. After use, try to store leather tack in a dry, airy space and avoid putting it away with sweat or moisture still on it.
If the same mould keeps coming back, check the storage area itself. A damp tack room, closed cupboard or bags with no airflow can make recurring mould more likely.
Products That May Help
If you’re dealing with mould on leather tack, this collection can help support a more consistent cleaning and conditioning routine as part of general tack care.
Related Questions
Can I use mouldy tack on my horse after cleaning it?
How do I stop mould coming back on leather tack?
When is leather too damaged to keep using?
Atlas is here to support owners with practical, easy-to-understand guidance. It is not a substitute for professional veterinary advice. If you're concerned about your animal's health, symptoms worsen, or something doesn't feel right, contact your vet.